1, the person in charge of the book association (at least the director or above) will personally introduce you, that's no problem.
2. Participate in the calligraphy exhibition organized by the Association, enter the exhibition twice or win an award once.
Publish your calligraphy works twice in the local newspaper (the higher the level, the better).
Then you ask them to write an application, go through the formalities and apply for a membership card.
Wish you success!